mirror of https://github.com/ARMmbed/mbed-os.git
134 lines
4.3 KiB
C
134 lines
4.3 KiB
C
/*
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* cc_internal.h
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*
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* Internal utility functions and definitions,
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* used for converting mbedtls types to CC types, and vice versa
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*
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* Copyright (C) 2018, Arm Limited, All Rights Reserved
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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#ifndef __CC_INTERNAL_H__
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#define __CC_INTERNAL_H__
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#include "crys_ecpki_types.h"
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#include "crys_ec_mont_api.h"
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#include "mbedtls/ecp.h"
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#include <stddef.h>
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#include <stdint.h>
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#define CURVE_25519_KEY_SIZE 32
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define MAX_KEY_SIZE_IN_BYTES ( ( CRYS_ECPKI_MODUL_MAX_LENGTH_IN_WORDS ) * SASI_32BIT_WORD_SIZE)
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/* ECC utility functions and structures*/
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typedef struct cc_ecc_ws_keygen_params{
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CRYS_ECPKI_UserPublKey_t pubKey;
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CRYS_ECPKI_UserPrivKey_t privKey;
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CRYS_ECPKI_KG_TempData_t kgTempData;
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} cc_ecc_ws_keygen_params_t;
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typedef struct cc_ecc_ws_comp_shared_params{
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CRYS_ECPKI_UserPublKey_t pubKey;
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CRYS_ECPKI_UserPrivKey_t privKey;
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CRYS_ECDH_TempData_t ecdhTempData;
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} cc_ecc_ws_comp_shared_params_t;
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typedef struct cc_ecc_ws_verify_params{
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CRYS_ECPKI_UserPublKey_t pubKey;
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CRYS_ECDSA_VerifyUserContext_t verifyContext;
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} cc_ecc_ws_verify_params_t;
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typedef struct cc_ecc_ws_sign_params{
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CRYS_ECPKI_UserPrivKey_t privKey;
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CRYS_ECDSA_SignUserContext_t signContext;
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} cc_ecc_ws_sign_params_t;
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typedef struct cc_ecc_25519_keygen_params{
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uint8_t pubKey[CURVE_25519_KEY_SIZE];
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uint8_t privKey[CURVE_25519_KEY_SIZE];
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CRYS_ECMONT_TempBuff_t kgTempData;
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} cc_ecc_25519_keygen_params_t;
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typedef cc_ecc_25519_keygen_params_t cc_ecc_25519_comp_shared_params_t;
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/**
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* \brief This function converts mbedtls type mbedtls_ecp_group_id
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* to Cryptocell type CRYS_ECPKI_DomainID_t
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*
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* \param grp_id The mbedtls mbedtls_ecp_group_id to convert
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*
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* \return \c The corresponding CRYS_ECPKI_DomainID_t.
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* CRYS_ECPKI_DomainID_OffMode if not recognized.
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*/
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CRYS_ECPKI_DomainID_t convert_mbedtls_grp_id_to_crys_domain_id( mbedtls_ecp_group_id grp_id );
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/* f_rng conversion from mbedtls type to cc type*/
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typedef struct
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{
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int (*f_rng)( void* ctx, unsigned char* output, size_t outSizeBytes );
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void* ctx;
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}mbedtls_rand_func_container;
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/**
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* \brief This function converts mbedtls f_rng type to
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* Cryptocell f_rng type(SaSiRndGenerateVectWorkFunc_t)
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*
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* Note: The Mbed TLS type f_rng signature is:
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* int (*f_rng)( void* ctx, unsigned char* output, size_t outSizeBytes );
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* while CC f_rng signature is:
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* uint32_t (*SaSiRndGenerateVectWorkFunc_t)(
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* void *rndState_ptr,
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* uint16_t outSizeBytes,
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* uint8_t *out_ptr)
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*
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* so the Mbed TLS f_rng can't be sent as is to the CC API.
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*
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* In addition, this function manipulates the different random data,
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* to adjust between the way Cryptocell reads the random data. This is done for
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* different standard tests to pass.
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*
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*
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* \param mbedtls_rand The mbedtls rnd context pointer
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* \param outSizeBytes The size of the output buffer
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* \param out_ptr Pointer to the output buffer
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*
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* \return \c The corresponding CRYS_ECPKI_DomainID_t.
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* CRYS_ECPKI_DomainID_OffMode if not recognized.
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*/
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uint32_t convert_mbedtls_to_cc_rand( void* mbedtls_rand, uint16_t outSizeBytes, uint8_t* out_ptr );
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/**
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* \brief This function convertsCryptocell error
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* Mbed TLS related error.
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*
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*
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* \return \c The corresponding Mbed TLS error,
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* MBEDTLS_ERR_PLATFORM_HW_ACCEL_FAILED as default, if none found
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*/
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int convert_CrysError_to_mbedtls_err( CRYSError_t Crys_err );
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#ifdef __cplusplus
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}
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#endif
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#endif /* __CC_INTERNAL_H__ */
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